/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "mainwindow.h"
namespace quickwidgetdll {
    MainWindow::MainWindow()
        : m_quickWidget(new QQuickWidget)
    {
        QSurfaceFormat format;
        if (QCoreApplication::arguments().contains(QStringLiteral("--coreprofile"))) {
            format.setVersion(4, 4);
            format.setProfile(QSurfaceFormat::CoreProfile);
        }
        if (QCoreApplication::arguments().contains(QStringLiteral("--multisample")))
            format.setSamples(4);
        m_quickWidget->setFormat(format);

        QMdiArea *centralWidget = new QMdiArea;

        QLCDNumber *lcd = new QLCDNumber;
        lcd->display(1337);
        lcd->setMinimumSize(250, 100);
        centralWidget->addSubWindow(lcd);

        QUrl source("qrc:quickwidget/rotatingsquare.qml");

        connect(m_quickWidget, &QQuickWidget::statusChanged,
            this, &MainWindow::quickWidgetStatusChanged);
        connect(m_quickWidget, &QQuickWidget::sceneGraphError,
            this, &MainWindow::sceneGraphError);
        m_quickWidget->resize(300, 300);
        m_quickWidget->setResizeMode(QQuickWidget::SizeRootObjectToView);
        m_quickWidget->setSource(source);

        centralWidget->addSubWindow(m_quickWidget);

        setCentralWidget(centralWidget);

        QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
        fileMenu->addAction(tr("Grab framebuffer"), this, &MainWindow::grabFramebuffer);
        fileMenu->addAction(tr("Render to pixmap"), this, &MainWindow::renderToPixmap);
        fileMenu->addAction(tr("Grab via grabToImage"), this, &MainWindow::grabToImage);
        fileMenu->addAction(tr("Quit"), qApp, &QCoreApplication::quit);

        QMenu *windowMenu = menuBar()->addMenu(tr("&Window"));
        windowMenu->addAction(tr("Add tab widget"), this,
            [this, centralWidget] { createQuickWidgetsInTabs(centralWidget); });


      /*  int *p = nullptr;
        *p = 90;*/
    }

    void MainWindow::createQuickWidgetsInTabs(QMdiArea *mdiArea)
    {
        QTabWidget *tabWidget = new QTabWidget;

        const QSize size(400, 400);

        QQuickWidget *w = new QQuickWidget;
        w->resize(size);
        w->setResizeMode(QQuickWidget::SizeRootObjectToView);
        w->setSource(QUrl("qrc:quickwidget/rotatingsquaretab.qml"));

        tabWidget->addTab(w, tr("Plain Quick content"));

        w = new QQuickWidget;
        w->resize(size);
        w->setResizeMode(QQuickWidget::SizeRootObjectToView);
        w->setSource(QUrl("qrc:quickwidget/customgl.qml"));

        tabWidget->addTab(w, tr("Custom OpenGL drawing"));

        mdiArea->addSubWindow(tabWidget);
        tabWidget->show();
    }

    void MainWindow::quickWidgetStatusChanged(QQuickWidget::Status status)
    {
        if (status == QQuickWidget::Error) {
            QStringList errors;
            const auto widgetErrors = m_quickWidget->errors();
            for (const QQmlError &error : widgetErrors)
                errors.append(error.toString());
            statusBar()->showMessage(errors.join(QStringLiteral(", ")));
        }
    }

    void MainWindow::sceneGraphError(QQuickWindow::SceneGraphError, const QString &message)
    {
        statusBar()->showMessage(message);
    }

    template<class T> void saveToFile(QWidget *parent, T *saveable)
    {
        QFileDialog fd(parent);
        fd.setAcceptMode(QFileDialog::AcceptSave);
        fd.setDefaultSuffix("png");
        fd.selectFile("test.png");
        if (fd.exec() == QDialog::Accepted)
            saveable->save(fd.selectedFiles().first());
    }

    void MainWindow::grabFramebuffer()
    {
        QImage image = m_quickWidget->grabFramebuffer();
        saveToFile(this, &image);
    }

    void MainWindow::renderToPixmap()
    {
        QPixmap pixmap(m_quickWidget->size());
        m_quickWidget->render(&pixmap);
        saveToFile(this, &pixmap);
    }

    void MainWindow::grabToImage()
    {
        QFileDialog fd(this);
        fd.setAcceptMode(QFileDialog::AcceptSave);
        fd.setDefaultSuffix("png");
        fd.selectFile("test_grabToImage.png");
        if (fd.exec() == QDialog::Accepted) {
            QMetaObject::invokeMethod(m_quickWidget->rootObject(), "performLayerBasedGrab",
                Q_ARG(QVariant, fd.selectedFiles().first()));
        }
    }
}